Smoke jack for diesel locomotives



Jan- 12, 1954 H. KNuTsoN ETAL. 2,665,647

SMOKE JACK FOR DIESEL LOCOMOTIVES Filed NOV. 12. 1949 F/G l F/G. 2

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INVENTUM: HAROLD KNU TSON HAROLD G K/VUTSON ATT'Y Patented Jan. 12, 1954 UNITED STATES PATENT oFF'lcE SMOKE JACK FOR DIESEL LOCOMOTIVES Harold Knutson and Harold G. Knutson,

Chicago, Ill.

Application November 12, 1949, Serial N o. 126,854

3 Claims.

This invention relates in general to a movable smokejack, particularly intended for diesel locomotive round houses, although it may have a more general use Wherever applicable.

In servicing diesel locomotives in an engine house, the fumes are dangerous, damaging and disagreeable, and because of the short stacks or discharge pipes, the Ventilating means must be closely adjustable over the top of the discharge pipe which usually projects only a short distance above the top of the diesel engine.

The present invention provides an adjustable jack or stack which may be easily moved closely over the diesel engine discharge pipe and free from such engagement.

An important object of the invention is to provide a vertically movable mounting for a discharge stack which may also be applied to an inclined roof or support.

A further object of the invention is to automatically close the smoke stack when the smoke jack is raised from its smoke receiving position.

Still a further object of the invention is to limit the movement of the smoke jack from descending too far.

Other objects of the invention will appear in the specification and will be apparent from the accompanying drawings in which,

Fig. 1 is a side elevation with some of the parts shown in section of a ventilator construction in accordance with this invention and in lowered position;

Fig. 2 is a similar view showing the parts in raised position; and

Fig. 3 is a sectional 3--3 of Fig. 2;

For diesel engines, it is necessary to have a closer adjustment and movement of the smoke jacks in order to receive the smoke and vapors therefrom and to discharge it from the engine house. It is also desirable to insure a proper draft for the smoking fumes regardless of the direction of the wind and to close the stack entirely when it is not in use.

The present invention provides an adjustable hood which may be moved to any extent and when raised, it closes the smoke stack.

Referring now more particularly to the drawings, the smoke jack comprises a circular vertical stack Ill connected at its lower end to the circularly reduced upper end of a. hood I2 which is preferably rectangular at its bottom. In the hood, and extending upwardly together at opposite sides of the center, are deector plates I4 which extend about half of the height of the view taken on the line hood and transversely thereof to the opposite sides, and being spaced apart at the top to allow a free passage of gases therethrough. Should the stack of any locomotive be located between the two plates I4 or at either side thereof relative to the front or rear of the hood, the exhaust therefrom will be directed upwardly into the circular stack IU and will not tend to swirl around in the hood I2.

Above the stack ID and fitting closely but slidably therearound is a fixed circular stack I6 having a supporting ring I B at its lower end engaged by angle bar cross pieces 2U for rigidly supporting this stack in connection with roof rafters 22 and other superstructure 24` of an engine house. Usually the roof is inclined in one direction or the other, represented by the position of the rafters at opposite sides of the stack to provide an outlet chamber 26 therefor, and any suitable supports such as Yguy-rods 28 and 30 of various lengths may be provided for securing the cross bars 2|] to the rafters and thus holding the stack I6 in a fixed vertical position. At the upper end of the stack is a canopy 32 having a round end 34 for engaging the upper end ofthe stack and a flanged rectangular base 36 for engaging the upper end of the superstructure 34.

Attached at opposite sides of the hood I2 are angle bar side braces 4I) to the ends of which are connected Wire cables 42 which extend over pulleys 44 mounted in a ring 46 secured to the upper fixed stack I6. The outer ends of the wire cables extend around fixed pulleys 48 carried by a cross piece 2B or any other fixed support and directing the cables together so that they can be simultaneously operated.

Within the fixed stack I6 is a damper 50 pivoted at opposite sides and one end engaged by an arm 52 outside of the stack. The other end of the arm is pivotally engaged by an upper end of a rod 54, the lower end of which extends into the path of one of the side braces 40 and is of such a length that when the hood I2 is raised a predetermined amount, the lower end of the bar will be engaged, thus moving the arm 52 and closing the damper in the stack I6.

To limit the downward movement of the hood I2, a chain 56 at each side of the hood is attached at its upper end to the cross piece 2|] and at its lower end to a clip 58 secured to the side of the hood I2. When the hood is raised, the chains are loosely looped at the sides and when the hood is lowered, the chains limit the downward movement thereof.

At the top of the iixed stack I6 is a ventilator which iits tightly over the end of the stack with a surrounding shell 10 spaced outwardly by a circular inclined deiiector ring 14, the lower end of which is below the upper edge above the lower edge of the shell 10, this ring partially closing the space between the stack and the shell 10.

At the top of the ventilator-Vista conical capm' with its apex abovel the shell` 'l0 and the lower edge or' base f the cap extendingbelow the" top of the sleeve. Between the inside of the shell '10, and the outer edge of the cap 80 and the outer edge of the ring 14, there is an outer space providing a plurality of pathsA forwsmole and fumes from the ventilator. The outer Shell' 10 preferably is non-circular provided with alternate'4V large and small flat portions' 84y and r86 respectively. The specic construction of the ventilator forms no particular part of the present inven-V Vof example and illustration rather than as a limitation or restrictionof theinvention as various changes` in` the construction, combination and arrangement vof the partsl may be made without departing fromV the spirit and scope of the invention.

We claim:

1. In a smokeljack', a movable stack section having `a downwardly flaringhood at the bottom thereof, a xed stack'section inwhich the upper end ofthe movable" stack isfsli-dable,V a damper in the fixed stacl-sectnin,v a crank-armior the damper extending to thel outside'of the xed stack;- a` rod'lconnectedlat'l its upper vend tothe outer end of the crank arm, the lower end of the rod extending downwardly in the path of the movable hood but spaced from the hood in its lowered position so that the hood must be raised a predetermined amount before the end of the arm is engaged, and means to raise and lower the hood thereby engaging the rod to close the damperwhen the Imovable hood is raised a predetermined amountm A, A f

2. In a smoke jack in' accordance with claim 1, a horizontal cross piece connected to the hood, means to raise and lower the hood comprising cables connected tov the end of the cross piece and pulleys connected to the fixed stack section to" raise and lower the movable stack section,

and the cross piece being in the path of the lower end of theV rodl buty spaced therefrom when the hood is at the lower end of its path so that the hoody must be raised a predetermined amount before the rod is engaged by the cross piece to close the-damper.l Y y Y 3.*Inv a smoke jack in` accordance with claim 2; the hoodr at the bottomof the movable stack section being substantially'v rectangular at its outer flaring ends,I and partition plates extending across withinE the hood from the lower openingthereof and'nclined'tow'ard each other and towardl the sidesvo'f` the'hood but terminating at a distancel from the junction of( the'hood with the stand to divide theh'ood into a number of chambers all merging together in a common chamber at the reduced portion of the hood for entrance together into the stack.

HAROLD KNU'ISON. I-IAl'tOLil)y G: KNUTSON.

References Citedv inthe' filefO'f this patent' UNITEDSTATES PATENTS Number ,e Name .Date Re.`l2,210 Dickinson Apr. 5, 1904 843,941l Gutelius Feb. 12, 1907 920,041` Evans ;Apr. 27, 1909 1,284,427 Moyer Nov. 12, 1918 1,730,193 Davie et al r; ,Oct. 1,' 1929 2,163,077 Wilson p June 20, 1939 2,495,816 Miller et al. Jan. 31, 1950 

